com.github.wolf480pl.ircd.netty.NettyServer.java Source code

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Here is the source code for com.github.wolf480pl.ircd.netty.NettyServer.java

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/*
 * This file is part of IRCd4j.
 *
 * Copyright (c) 2014 Wolf480pl <wolf480@interia.pl>
 * IRCd4j is licensed under the GNU Lesser General Public License.
 *
 * IRCd4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * IRCd4j is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.github.wolf480pl.ircd.netty;

import java.net.SocketAddress;
import java.util.concurrent.atomic.AtomicBoolean;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;

import com.github.wolf480pl.ircd.SessionHandler;

public class NettyServer {
    private SocketAddress bindAddress;
    private EventLoopGroup bossGroup;
    private EventLoopGroup workerGroup;
    private SessionHandler handler;
    private final AtomicBoolean started = new AtomicBoolean(false);
    private final AtomicBoolean stopped = new AtomicBoolean(false);
    private Channel channel;

    public NettyServer(SocketAddress bindAddress, SessionHandler handler) {
        this.bindAddress = bindAddress;
        this.handler = handler;
    }

    public ChannelFuture start() {
        if (!started.compareAndSet(false, true)) {
            return null;
        }

        ServerBootstrap bootstrap = new ServerBootstrap();
        bossGroup = new NioEventLoopGroup(1);
        workerGroup = new NioEventLoopGroup();

        IRCChannelInitializer initializer = new IRCChannelInitializer(handler);

        bootstrap.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class).childHandler(initializer)
                .childOption(ChannelOption.TCP_NODELAY, true).childOption(ChannelOption.SO_KEEPALIVE, true);

        ChannelFuture future = bootstrap.bind(bindAddress);
        this.channel = future.channel();
        return future;
    }

    public ChannelFuture stop() {
        if (!started.get()) {
            return null; //TODO: Failed future?
        }
        if (!stopped.compareAndSet(false, true)) {
            return null; //TODO: Failed future?
        }
        return channel.close().addListener(new ChannelFutureListener() {
            @Override
            public void operationComplete(ChannelFuture future) throws Exception {
                workerGroup.shutdownGracefully();
                bossGroup.shutdownGracefully();
            }
        });
    }

}